Help with identifying my grandfathers uniform please

[grannypammy]

Michael James O'Brien born 1898 in Northern Ireland ..Any help would be much appreciated thank you

[NSWP]

Hard to say, but perhaps mounted formation, perhaps Royal Horse Artillery, or Dragoons/Hussars?
Stripe = Lance Bombardier if Artillery or Lance Corporal in other units.

[grannypammy]

Thank you NSWP for your help. I want to write some details with this photo so your information is very valuable. I do have another photo of him again no details other than "Driver" pencilled on the back...He looks so young

[jim1]

Driver would indicate RHA/RFA.
2nd. photo shows him in tropical kit so overseas.

[grannypammy]

Thank you Jim1 this is great information I can finally piece together what my grandfather did during WW1   ..I think it is  R.F.A that I found in some notes ..I think I remember my grandmother saying something about him serving in India but I can not be sure about that

[NSWP]

Driver would indicate RHA/RFA.
2nd. photo shows him in tropical kit so overseas.

Driver = Driving the horse carriages pulling the guns?

[NSWP]

Thank you Jim1 this is great information I can finally piece together what my grandfather did during WW1   ..I think it is  R.F.A that I found in some notes ..I think I remember my grandmother saying something about him serving in India but I can not be sure about that

Good work, RFA = Royal Field Artillery, the gun carriages and all that.